From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: kashike <kashike@vq.lc>
Date: Fri, 9 Jun 2017 07:24:24 -0700
Subject: [PATCH] Add configuration option to prevent player names from being
 suggested


diff --git a/src/main/java/org/bukkit/Bukkit.java b/src/main/java/org/bukkit/Bukkit.java
index a314ff1363cb527fa7e1b366f9191939e9c7ca6e..d3d8c5ac59cee2ec24e91223e0c994016a4f9752 100644
--- a/src/main/java/org/bukkit/Bukkit.java
+++ b/src/main/java/org/bukkit/Bukkit.java
@@ -2143,6 +2143,16 @@ public final class Bukkit {
     public static boolean reloadCommandAliases() {
         return server.reloadCommandAliases();
     }
+
+    /**
+     * Checks if player names should be suggested when a command returns {@code null} as
+     * their tab completion result.
+     *
+     * @return true if player names should be suggested
+     */
+    public static boolean suggestPlayerNamesWhenNullTabCompletions() {
+        return server.suggestPlayerNamesWhenNullTabCompletions();
+    }
     // Paper end
 
     @NotNull
diff --git a/src/main/java/org/bukkit/Server.java b/src/main/java/org/bukkit/Server.java
index 610475aff60b7f19c4bedb932985c736fb890684..a8d3addae5b0ed261d6a27052ad4e54970de597c 100644
--- a/src/main/java/org/bukkit/Server.java
+++ b/src/main/java/org/bukkit/Server.java
@@ -1880,4 +1880,14 @@ public interface Server extends PluginMessageRecipient, net.kyori.adventure.audi
     void reloadPermissions(); // Paper
 
     boolean reloadCommandAliases(); // Paper
+
+    // Paper start - allow preventing player name suggestions by default
+    /**
+     * Checks if player names should be suggested when a command returns {@code null} as
+     * their tab completion result.
+     *
+     * @return true if player names should be suggested
+     */
+    boolean suggestPlayerNamesWhenNullTabCompletions();
+    // Paper end
 }
diff --git a/src/main/java/org/bukkit/command/Command.java b/src/main/java/org/bukkit/command/Command.java
index 6fd341482d5250ad814e870360e40b52427f799a..a26df5f6341d22ecd5e71da59b8f091848e627ad 100644
--- a/src/main/java/org/bukkit/command/Command.java
+++ b/src/main/java/org/bukkit/command/Command.java
@@ -99,7 +99,7 @@ public abstract class Command {
         Preconditions.checkArgument(args != null, "Arguments cannot be null");
         Preconditions.checkArgument(alias != null, "Alias cannot be null");
 
-        if (args.length == 0) {
+        if (args.length == 0 || !sender.getServer().suggestPlayerNamesWhenNullTabCompletions()) { // Paper - allow preventing player name suggestions by default) {
             return ImmutableList.of();
         }